20191098712 has 32 divisors (see below), whose sum is σ = 38877580800. Its totient is φ = 9827344800.

The previous prime is 20191098701. The next prime is 20191098737. The reversal of 20191098712 is 21789019102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180114 + ... + 269857.

It is an arithmetic number, because the mean of its divisors is an integer number (1214924400).

Almost surely, 2^20191098712 is an apocalyptic number.

It is an amenable number.

20191098712 is a deficient number, since it is larger than the sum of its proper divisors (18686482088).

20191098712 is a wasteful number, since it uses less digits than its factorization.

20191098712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450127 (or 450123 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 40.

The spelling of 20191098712 in words is "twenty billion, one hundred ninety-one million, ninety-eight thousand, seven hundred twelve".